The goal of this study is to compare the effects of two separate, manualized group interventions designed to improve social outcomes for young children with autism. The first type of group intervention utilizes a social skill curriculum delivered to a small group of children with autism at their school. This type of group will be referred to as the Skills group (SKILLS intervention). The other intervention delivers a social engagement curriculum at the children's school site and includes children with autism and typically developing peers, from the same school. This type of group will be referred to as the School Engagement Group (ENGAGE intervention).